India will be the most populous nation. Jul 12, 2022 0:41:22 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Swampy on Jul 12, 2022 0:41:22 GMT -5 That's nothing to be proud of, because there are too many Indians below the poverty line. That said, the UN estimates that the population will peak at 10.4 billion in 2080, but my back-of-the-envelope calculations say that will happen well before 2050.